JP4315309B2 - Click mechanism of single lever type mixed faucet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a click mechanism of a single lever type mixing faucet that can adjust the discharge amount and temperature of mixed water with a single handle.
[0002]
[Prior art]
Conventionally, in a single lever type mixed faucet that can adjust the discharge amount and temperature of mixed water by operating a single handle, the handle is suddenly operated from the water stop position to the fully open water discharge position. Japanese Patent Application Laid-Open No. 7-280113 (FIG. 12 of the present application) discloses a click mechanism provided so as not to cause unnecessary water discharge or water splash. Briefly describing FIG. 12, a click mechanism 44 is provided in a case body 43 in which a movable plate is slidably accommodated in a watertight state on a fixed plate, and a lever 45 connected to the movable plate. A plate spring made of two spring steels having a plurality of recesses 46 formed on both side surfaces of the lever 45 and a projection 48 engaging with the recesses 46 at the center and fixed to the upper portion of the case body 43. 47, the two protrusions 48 are urged against the respective recesses 46, and the turning operation of the lever 45 is adjusted stepwise, so that the discharge amount can be set very easily and reliably.
[0003]
In the case of the above, in areas where the water supply pressure is low and the lever is fully opened even if the amount of water discharged is relatively small, a click mechanism can be used to quickly switch from stopped water to fully discharged water or from fully discharged water to stopped water. You may not be able to operate the lever, and you may feel that operability is poor, but once you attach a mixing faucet with a click mechanism, it is a new way to return to a mixing faucet without a normal click mechanism. It is necessary to purchase and replace it. Replacing the expensive mixing faucet is a heavy burden on the user, and the construction is troublesome.
[0004]
[Problems to be solved by the invention]
The problem to be solved by the present invention is to provide a single lever type mixed water faucet that can be easily changed to either a click mechanism provided with a click mechanism or a click mechanism depending on the situation at the site. .
[0005]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a cartridge case in which a fixed plate having a water supply hole, a hot water supply hole, and a discharge hole and a movable plate having a mixing chamber opened on the fixed plate side face each other in a sliding manner. The cartridge case is housed in the valve chamber of the main body and fixed by the cover, and the movable plate is slid on the fixed plate by the operation of the handle connected to the lever connected to the movable plate at the other end. In a single lever type mixing faucet that adjusts the water discharge amount and temperature, the lever has an engagement groove on the side surface, and a ring can be detachably mounted on the inner periphery of the upper part of the cover. An engaging member that is detachable from and engageable with the engaging groove is accommodated when moving in the flow rate adjusting direction, and a click mechanism is formed by the engaging groove and the ring.
[0006]
According to a second aspect of the present invention, the ring is made of a synthetic resin material, and a locking claw that protrudes downward from the outer peripheral surface is elastically engaged with a locking portion formed on the upper inner periphery of the cover, It can be attached detachably.
[0007]
According to a third aspect of the present invention, the lever is provided with a receiving member made of ceramics, and an engaging groove is formed on a side surface of the receiving member.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 and 3, the valve chamber 2 formed in the main body 1 of the single lever type mixing faucet is provided with a water through hole 3, a hot water through hole 4, and a mixed water through hole 5. The water through hole 3 and the hot water through hole 4 communicate with a water supply source and a hot water supply source (not shown) on the primary side, and the mixed water through hole 5 communicates with a water discharge pipe 6 through which the secondary side discharges mixed water. .
[0009]
The valve chamber 2 of the main body 1 accommodates a substantially cylindrical cartridge case 8 from above, and a vertically long and cylindrical cover 9 that covers the outer peripheral surface of the cartridge case 8 is formed on the inner peripheral surface of the valve chamber 2. The cartridge case 8 is pressure-bonded and fixed to the valve chamber 2 by being screwed to the female screw portion 7.
[0010]
Inside the cartridge case 8, a pair of fixed plates 12 and a movable plate 16 which are formed into a disk shape by molding using ceramics or resin as raw materials are arranged facing each other in a sliding manner, and the fixed plate 12 is shown in FIG. As shown, a water supply hole 13, a hot water supply hole 14, and a discharge hole 15 penetrating both surfaces are provided. The water supply hole 13 is in the water through hole 3, the hot water supply hole 14 is in the hot water through hole 4, and the discharge hole 15 is It is made to respond | correspond so that it may each communicate with the through-hole 5 for mixed water.
[0011]
The movable plate 16 has a smaller outer diameter than the fixed plate 12, and slides the sliding contact surface 16 a so as to face the fixed plate 12, so that either the water supply hole 13 or the hot water supply hole 14 or both. A mixing chamber 17 that communicates and supplies water and hot water to the discharge hole 15 is formed so as to penetrate both surfaces, and a net 18 that reduces water flow noise is interposed in the mixing chamber 17.
[0012]
As shown in FIGS. 1 and 3, a disc-shaped slider 19 is watertightly fitted into the mixing chamber 17 of the movable plate 16 from above via a packing 20. The bearing portion 21 is provided. The lever guide 22 disposed on the upper portion of the slider 19 is pivoted around a pin 25 inserted into a shaft hole 24 drilled in a horizontal direction within a through hole 23 opened in the central vertical direction so that the lever 26 can rotate freely. The upper portion of the lever 26 protrudes from the lever guide 22 through the insertion hole 23, and a hook portion 27 is formed to protrude in the horizontal direction substantially in the middle of the protruding lever 26. Is engaged with the bearing portion 21 of the slider 19. Therefore, the movable plate 16 rotates on the fixed plate 12 with the pin 25 fixed to the lever guide 22 as a fulcrum by the operation of the handle 30 coupled to the top end of the lever 26 with the screw 31 in the left-right rotation direction and the vertical direction. By sliding in the direction or linear direction, the temperature and flow rate of the mixed water supplied from the water discharge pipe 6 can be adjusted.
[0013]
As shown in FIG. 5, the lever 26 is engaged with a click mechanism portion A with a ring 32 (to be described later) on both side surfaces of the flange portions 27, 27 exposed from the cartridge case 8 to the upper portion. A groove 29 is formed. If the ring 32 is not attached to the cover 9 as shown in FIG. 6, the engagement groove 29 does not contact anywhere even if the lever 26 is moved by operating the handle 30 in the flow rate adjustment direction. Normally, the flow rate of the mixed water is adjusted without any trouble. However, when the ring 32 is attached to the cover 9 as shown in FIG. 7, the lever 26 operates with a click mechanism between the ring 32 and the flow rate of the handle 30 is adjusted. In the middle of the operation, the operation can be temporarily stopped when reaching a substantially intermediate position between the water stoppage and the fully discharged water.
[0014]
The upper opening 10 of the cover 9 forms an annular locking portion 11 on the inner peripheral surface, and a cylindrical ring 32 made of a synthetic resin material projects downward from the outer peripheral surface as shown in FIGS. A pair of locking claws 33 formed in this manner is elastically engaged with the locking portion 11, so that the cover 9 is detachably and rotatably mounted. The ring 32 can be attached to the cover 9 by loosening the screw 31 and removing the handle 30 from the lever 26. The user can attach the ring 32 to the cover 9 very easily. As shown in FIG. 2, the ring 32 is formed with a long hole 34 through which a flange portion 27 protruding in the horizontal direction substantially in the middle of the lever 26 is inserted vertically so as to be movable forward and backward. Since the collar portion 27 is locked to the long hole 34, it can be rotated together with the lever 26, and a pair of substantially cylindrical lateral holes 35 are formed in the horizontal direction so as to face each other. The lateral hole 35 accommodates a spring 37 held by a blind cover 36 and an engagement member 38 that is elastically biased toward the long hole 34 by the spring 37. The protruding protrusion 39 is inserted into a communication hole 40 that connects the horizontal hole 35 and the long hole 34, and is exposed to the long hole 34 by the elastic force of the spring 37.
[0015]
Therefore, when the handle 30 is rotated left and right to adjust the temperature, the flange portion 27 of the lever 26 is locked in the elongated hole 34 of the ring 32, so that the ring 32 rotates together with the lever 26 and the handle 30 is moved in the direction of water discharge. Alternatively, when operated in the water stop direction, the flange portion 27 of the lever 26 moves in the elongated hole 34 of the ring 32, and the protrusion 39 of the engagement member 38 engages the lever 26 between the water stop position and the maximum water discharge position. The operation is temporarily stopped by engaging with the groove 29.
[0016]
In the above configuration, in FIG. 3, the water supply hole 13 and the hot water supply hole 14 of the fixed plate 12 are closed by the sliding contact surface 16 a of the movable plate 16, so that the water is stopped. When the handle 30 is pushed upward from this state, the movable plate 16 slides forward via the lever 26 and the slider 19 connected to the handle 30, and the mixing chamber 17 of the movable plate 16 is formed in the water supply hole of the fixed plate 12. 13, communicating with the hot water supply hole 14, water and hot water are mixed in the mixing chamber 17 of the movable plate 16, pass through the discharge hole 15 of the fixed plate 12, and are discharged to the outside from the water discharge pipe 6. In this case, as shown in FIG. 1, the protrusion 39 of the engaging member 38 is engaged with the engaging groove 29 of the lever 26 by the click mechanism A at a substantially intermediate position in the middle of operating the handle 30 upward. A sense of resistance is given to the operation of the handle 30, and the operation is temporarily stopped. Therefore, the mixed water is not suddenly discharged in a large amount in the fully opened state, and the mixed water is not used wastefully or scattered around and immersed in water. Next, when the mixed water is discharged fully open, the handle 30 is further operated upward to disengage the protrusion 39 from the engagement groove 29, so that the fully open state can be achieved.
[0017]
Even when the handle 30 is operated from the fully open state to the water stop direction, the lever 26 is temporarily stopped at the substantially intermediate position by the click mechanism A and does not move to the water stop position all at once. Can be prevented.
[0018]
Next, when the handle 30 is rotated in the horizontal direction from the water stop position to adjust the temperature, the lever 26 and the ring 32 rotate together, and the click mechanism portion no matter which temperature adjustment position the handle 30 is operated in the flow rate adjustment direction. A gives resistance to the operation of the handle 30 as described above.
[0019]
In a region where the water supply pressure is low, even if the handle 30 is operated to the fully open position, the amount of water discharged is relatively small, so that the click mechanism may not work. In this case, if the handle 31 is loosened to remove the handle 30 from the lever 26 and the ring 32 is removed from the cover 9 and then the handle 30 is fixed to the lever 26 with the screw 31 again, the click lever does not act. Anyone can easily change to a single-lever mixing faucet with or without a click mechanism.
[0020]
8 and 9 show another embodiment. In this embodiment, the structure of the ring forming the click mechanism is different from that of the above embodiment. In the click mechanism portion A ′ of this embodiment, a pair of support portions 41, 41 for supporting the leaf spring-like engagement member 38a provided separately on the upper surface of the ring 32a in front and back faces the both ends of the long hole 34a. As shown in FIG. 9, the engaging member 39 is in the shape of a horizontally long leaf spring, and both ends are bent into a U shape so as to be sandwiched between the narrow grooves 42 formed in the support portion 41, and a long hole is formed in the center. A protrusion 39a that is exposed on 34a and elastically engages with the engagement groove 29 of the lever 26 is bent. Since the other configuration is the same as that of the above embodiment, a detailed description is omitted.
[0021]
In this embodiment, when the handle 30 is pushed upward from the water stop state, the protrusion 39a of the engagement member 38a is engaged with the engagement groove 29 of the lever 26 at a substantially intermediate position during the operation, and the operation is temporarily stopped. When the handle 30 is further operated, it is elastically retracted toward the space 41a side of the support portion 41, the engagement with the engagement groove 29 is released, and the fully open state can be achieved.
[0022]
10 and 11 show another embodiment of the lever. The lever of the above embodiment is made of stainless steel, and the engagement groove is worn and damaged when the handle is engaged with the protrusion of the engagement member or released from engagement for a long period of time. However, there is a problem that rattling occurs. In the lever 26a of this embodiment, a through hole 29a is horizontally drilled between the flanges 27, 27, and receiving members 29b made of ceramics are fitted into the through holes 29a, and both side surfaces of the receiving member 29b are fitted. An engaging groove 29c is formed in the inner surface.
[0023]
In the click mechanism portion A ″ of this embodiment, the engagement groove 29c with which the protrusion 39 of the engagement member 38 engages is made of ceramics such as alumina, silicon carbide, zirconia, sialon, etc., so wear resistance and durability It is possible to prevent rattling during the operation of the steering wheel even after long-term use.
[0024]
【The invention's effect】
In the single lever type mixed faucet of the present invention, the ring forming the click mechanism portion can be detachably attached to the cover, so that when the ring is attached, the ring can be operated vigorously when adjusting the water discharge amount by operating the handle. Even if it stops temporarily at an almost intermediate position, it does not suddenly become fully open, and the mixed water will not be discharged unnecessarily, it will not splash around and the clothes and floor will be submerged, and the water pressure will be reduced if the ring is removed from the cover. It can be used normally even in areas with a low temperature, etc., and can be easily changed to either one according to the usage conditions at the site, so it is very convenient to use.
[0025]
It is not necessary to replace an expensive mixing faucet with a new one to change the one with or without the click mechanism as in the prior art, and the existing mixing faucet can be used as it is and is economical.
[0026]
The ring can be elastically attached to the inner periphery of the cover, and anyone can easily attach and remove the ring.
[0027]
The lever that forms the click mechanism is equipped with a receiving member made of ceramics, and an engagement groove is formed on the side of the receiving member. This improves wear resistance and durability. Shaking can be prevented.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an essential part of a single lever type mixing faucet.
2 is a cross-sectional view taken along line XX in FIG.
FIG. 3 is a longitudinal sectional view of a single lever type mixing faucet.
FIG. 4 is a perspective view of a fixed plate and a movable plate.
FIG. 5 is a perspective view of a lever.
FIG. 6 is a perspective view of a main body and a ring of a single lever type mixing faucet.
7 is an explanatory diagram of a state in which the ring of FIG. 6 is mounted on the main body.
FIG. 8 is a perspective view of another embodiment ring.
9 is a perspective view of the engagement member of FIG. 8. FIG.
FIG. 10 is a perspective view of a lever according to another embodiment.
FIG. 11 is an explanatory diagram when the lever of FIG. 10 is attached to a single lever type mixing faucet.
FIG. 12 is an explanatory diagram of the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Valve chamber 8 Cartridge case 9 Cover 11 Locking part 12 Fixed plate 13 Water supply hole 14 Hot water supply hole 15 Discharge hole 16 Movable plate 17 Mixing chamber 26, 26a Lever 29, 29c Engaging groove 29b Receiving member 30 Handle 32, 32a Ring 33 Locking claws 38, 38a Engaging member 39 Protrusion A, A ', A "Click mechanism

Claims (3)

A fixed plate having a water supply hole, a hot water supply hole, and a discharge hole, and a movable plate formed inside a mixing chamber opened on the fixed plate side are slidably facing each other and mounted in a cartridge case. It is housed in the valve chamber of the main body, fixed by a cover, and the movable plate is slid on the fixed plate by adjusting the lever connected to the movable plate and the handle connected at the other end to adjust the discharge amount and temperature of the mixed water. In the single lever type mixing faucet, the lever has an engagement groove on a side surface, and a ring can be detachably mounted on the inner periphery of the upper part of the cover, and the ring is moved when the lever moves in the flow rate adjustment direction. A click mechanism of a single lever type mixed water faucet, wherein an engagement member detachably engageable with an engagement groove and a click mechanism portion is formed by the engagement groove and the ring. The ring is made of a synthetic resin material, and a locking claw that protrudes downward from the outer peripheral surface is elastically engaged with a locking portion formed on the upper inner periphery of the cover so that the ring can be detachably attached to the cover. The click mechanism of the single lever type mixing faucet according to claim 1, wherein 2. The click mechanism of a single lever type mixing faucet according to claim 1, wherein said lever is provided with a receiving member made of ceramics and an engaging groove is formed on a side surface of said receiving member.

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